The process of electroerosive dispersion (EED) is the destruction of a conductive material used due to the local effect of short-term electrical discharges between the electrodes. Within the limits of the effect of the discharge, under the influence of significant temperatures, heating occurs. Then the melting and incomplete evaporation of the substance used. In order to obtain a high temperature in a narrow zone of a small volume, a significant concentration of energy is required. This goal is achieved by applying a pulse voltage, and the EED process is carried out in a liquid medium. This medium is a working fluid that fills the gap between the electrodes, called the interelectrode gap. Practice shows that as higher the pulse voltage applied to the electrodes, as smaller the particle size of the substance can be obtained. To obtain nanoparticles, it is advisable to use a pulse voltage of 10-30 kV. Installations have been developed that operate with high impulse voltages (up to 50 kV) and installations with pulse voltages up to 1000 V. Impulse energy and pulse repetition rate are regulated within wide limits.
Powerful universal high-voltage dispersant for nanopowder production VDM 25-4.8/10
Physical description of the device:
Output voltage: adjustable 8 ... 25 kV. output power: up to 10 kW (adjustable from 0.4 to 10 kW). The energy of the capacitor bank: 1.5 kJ.
Output pulse repetition rate up to (at a maximum voltage of 25 kV): 6 Hz - energy 1.5 kJ.
Output pulse repetition rate up to (at a voltage of 15 kV): 16 Hz - energy 0.5 kJ.
Output pulse repetition rate up to (at a voltage of 10 kV): 30 Hz - energy 0.25 kJ.
Number of channels: 1. Number of capacitors: 1 (5 μF x 25 kV). Input voltage: 3-ph 400V. Number of arresters: 1 (adjustable air). Installation dimensions: 1000х1200х1700mm (height 1700). Installation weight: 340 kg.